Read phy address from device tree and use it to find the phy device if not found then search in the range of 0 to 31.
Signed-off-by: Padmarao Begari padmarao.begari@microchip.com Reviewed-by: Anup Patel anup.patel@wdc.com Reviewed-by: Bin Meng bin.meng@windriver.com Tested-by: Bin Meng bin.meng@windriver.com --- drivers/net/macb.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/drivers/net/macb.c b/drivers/net/macb.c index 0c2ac811fb..2225b33ff6 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -531,6 +531,12 @@ static int macb_phy_find(struct macb_device *macb, const char *name) int i; u16 phy_id;
+ phy_id = macb_mdio_read(macb, macb->phy_addr, MII_PHYSID1); + if (phy_id != 0xffff) { + printf("%s: PHY present at %d\n", name, macb->phy_addr); + return 0; + } + /* Search for PHY... */ for (i = 0; i < 32; i++) { macb->phy_addr = i; @@ -1311,6 +1317,7 @@ static int macb_eth_probe(struct udevice *dev) { struct eth_pdata *pdata = dev_get_plat(dev); struct macb_device *macb = dev_get_priv(dev); + struct ofnode_phandle_args phandle_args; const char *phy_mode; int ret;
@@ -1323,6 +1330,12 @@ static int macb_eth_probe(struct udevice *dev) return -EINVAL; }
+ /* Read phyaddr from DT */ + if (!dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0, + &phandle_args)) + macb->phy_addr = ofnode_read_u32_default(phandle_args.node, + "reg", -1); + macb->regs = (void *)pdata->iobase;
macb->is_big_endian = (cpu_to_be32(0x12345678) == 0x12345678);